Hand eire extinguisher



. H. TIBBALS.

A HAND FIRE EXTINGUISHER.

APPLICATION FILED DEC.17.19\3.

Patented Auf. s, 1922.

l l I/,EN TOR UNITED STATES PATENT A OFFICE.

WALTER H. TIBBALS, 0F SYRACUSE, YYORK.

"""` HAND FIRE EXTINGUISHER. j rfi specification of Lettersfratent.Patented Aug. 8, A1922.

Application flied December 17, i913. serial No. 807,222.

To all whom z' may concern.'

Be it known that I, WALTER H. TIBBALS, 0f Syracuse, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Hand Fire Extinguishers, of which K4the following, takenin connection with the accompanying drawings, is a full, clear, andexactdescription.

This invention relates to certain'improvements in hand fire`extinguishers of the class set forth in my Patent No. 1,214,971, issuedFebruary 6,1917, and` refers more particularly to means yfor preventingthe entrance of air into the tubein any position of adjustment of thecontainer untilpractically all or at least a predetermined quantity ofthe lire-extinguishing liquid has been discharged.

yThe device shown is highly eective in discharging practically all ofthe `liquid contents while -thefcontainer` is heldin an upright positionor sufficiently so to cause the liquid to cover the lower` open. end ofthe tube during the discharge, but I have discovered that if thecontainer is inverted so as to expose the: lower end of the tubein theair space, the device will simply discharge air and not liquid .which isobjectionable particularly in the hands of careless or unskilledoperators.

- The primary objelct,vtherefore, of my present invention is to enablethedevice to discharge practically itsentirey contents of liquid in anyposition either upright, inverted or at different angles from ahorizontal or verticall position and atthe same ltime to maintain aliquid sealy at the valve seat and also at the joint between the valveycase. and bushing.

Other objects and uses relatingtoispecic f parts of the device will beybrought out in the following description. f 4 j In the drawingsy Theligure is aj longitudinal vertical sectional view, partly `in elevation,ofa hand fire extinguisher, embodying vthe various features of myinvention. 1 f `1 {As illustrated the fire extinguisher comprises arcylindrical container 1-having end heads-2* and#8.- secured 'to thewitha central opening in which is secured a bushing es Vfinely heidapiece by a jam vside of' the valve chamber, the outer nut 5fand sealedby solder or equivalent means to kiorm aliquidand air-tight joint.

The bushing -4- is provided with a central cylindrical opening in whichis perma nently secured a tube -6- and a reduced threaded end of a valvecase -7-, the latter being secured in place and sealed against leakage,the outer end of the tube being also soldered or otherwise hermeticallysealed in the bushing against leakage'lof air or liquid.

The valve case is provided with a main passage ,9- and a branch passage--10-, the main passage communicating with the interiorof the container.-1- through the tube t3- which extends from the head ,-3 to the pointnear the head -2- while the branch passage lO-'- communicates with avalve chamber -11- and terminates in a discharge nozzle 12- which isadaptled to 'be connected to a pump or to an air compressor orequivalent devicefor forcing air through the passages #-10-y and 9- andthence through the tube -6- into the interior of the containerl'orcompressing the liquid and maintaining it under a sufficient pressure`above the atmosphere to expel practicallyall of the liquid contents.

The passage `-'-9- terminates in avvalve seat I3- opening into the valvechamber 11 and is normally engaged by a needle valve 1eto close thepassage -9-.

The valve 14-' is provided with an enlarged threaded portion 15C engagedin an opening in the valve case just at the outortion or stein ofthevalve being cylindricalpand is extended through a gland or stuffingbox +16- and provided with a hand-piece or opened and closed. y j j .Ajwasher of any suitable ymaterial is interposed` between the packing ofthe gland and adjacent outer end of the threaded portion -`15 tocompressor tighten the packing on the stem when the valve is opened soas to more edectively pack the joint the tube and closes against thepressure.

The means for automatically regulating kthe amount of liquid which maybeintroduced into the container 1 and which `also serves yas anair vent topermit the escape of air during the introduction of such liquid,consists of a relatively small tube w19-l having one end permanentlysecuredy wheelf--lby which the valve may be wagainst leakage. VThe valveis coXialwith by brazing, soldering or otherwisel to the inner end ofthe bushing -4- at one side of and in close proximity to the tube 6- tocommunicate with the vent passage 20- leading from the tube -19- throughthe outer end face of the bushing so that when thev valve case +47- isremoved for-filling the container with the fire-extinguishing liquid,the air may escape freelyvv from the container out through the tube w19-and passage 20- to the atmosphere, but when the valve case is replacedin the bushing and tightened, the lead gasket covers the mouth of thepassage w20- 'and effectively prevents any possibility of escape of air'or liquid from the interior of the container',

The opposite or inner end of the vent tube -19- extends beyond therequired level of the liquid and is returned toward the top, andterminates some distance from the head -3- t-o automatically regulatethe amount of liquid which may be introduced intothe container byestablishing a liquid seal 'at the mouth thereof and preventingfurther'escape ofthe air. i

The return bend, as -21-, of the inner end of the tube 19- serves totrap the liquid which may enter thereinthrough its upturned end,therebyV preventing` the escape of air throughsaid tube as soon as theliquid:reaches` a' level suliicient to overflow into the tube.

lt is, therefore, evident that as soon as the vent is cut off bytheliquid seal in they return bend of the tube 19-, "the air willbe trappedin the air chamber of the container --lh and thus prevent the entranceof additional liquid which will simply overflow at the outer end of thetube leaving the container filled with liquid to the level oftheupturned end of the trap of the tube 1Q- rl`his automatic regulation ofthe volume of the liquid obviates the use of any gage and assures theintroduction of an exact predetermined quant-ity of liquid in all'-receptacles.

l/Vh'en the required amount of fire-extinguishing liquid is introducedinto the con- 'ta-menthe valve Vcase T lislirmly screwed in operative.position and the valve llopened whereupon the pump' or other aircempresser may be attached to the nozzle for introducing air under anydesired pressure into the .interior of the 'container tube After thecontainer is charged inthe manner'described, the valve MfIn'aybe'iopened for an instant just sufficient 'to allow theescape of1air from thetube and passage -`-9- oruntil the liquid fills said ing lof the' container.

ln order to further reduce the liability of leakage, the entire interiorsurface of the containeris coated with wax or equivalent coating capableof being evenly distributed to render," the Walls of the containeriinpervious to air or liquid.

The means for preventing the entrance of air from the interior of thecontainer into charge of practically all of the liquid contents of thecontainer in any position in which'the device'might be held preferablyconsists of an `auxiliary U-shaped tube 35 having both arms runningparallel with the main tube -6 to points in proximityto opposite ends of'the container -l and one arm journaled in the main tube. 61- to rotatetherein so that if the container is broughtto a substantially horizontalposition, the "other arm of ythe tube ''will swing to the lower side ofthe container to assure theimmersion of'its end-in theliquid until a.predetermined quantity has beeni discharged from thecontainer,therebypreventing the entrance of air into "the ymain tubeduring such discharge.

The Uesh'aped auxiliary tube *'85- has one` leg inserted lthroughthe'inner or lower end of the main tube 6 and upwardlyto av point inproximity to the upper container head where it fis rounded to 'form' a`valve coacting with a corresponding'spheri- :cal valve seat'-37-' forclosing connection between vtheimain tube and delivery passage 4Q-*inthe valvecase'.

The other legof the auxiliary tube '35 extends from: a point near thelower head tainer is tilted or turned about its axis,

thereby assuring the positioning of the outer leg of the auxiliary tubeat thelower side ofthe containerin ease theflatter is tiltedftoapproximately a horizontal position which assures afliquid seal for `theopen endk of 'the auxiliary tube' when the containeris in such positionunt-il practically all of Ithe liquid isdischargedfrom the container.

What l claim is: v- -l. ln are yextinguisher of the classdescribed; a'Yreceptacle containing a fire-f ex- Itinguishing liquid and airunder.`abnormal pressure and having a passage inone end se'rif'in'g' asianinlet for compressed air and an eutlet forthefliquidg a valve forsaidp'assage9 a main tubleading fromthev passage they tubelG*'andfthereby permitting the disinto the receptacle, and an auxiliarytube having means for cutting off communication between the -main tubeandL said passage When the inner end ot' .said main tube is` exposed tothe air in the receptacle.

2. In a tire extinguisher of' the class described, a receptaclecontaining a lire extinguishing Huid and -having a: delivery passage, ainain tube extending from said passage into the interior of thereceptacle, an auxiliary tube having a portion thereof Inova-bleendvvise in the main tube and provided With a valve controllingcommunication between the main tube and passage, and a separate valvefor controlling the escape of liquid through saidv passage.

8. In a lre extinguisher of the class de scribed, a receptacle having adelivery passage in oneend and a valve therefor, a main tube leadingfrom said passage into the receptacle, an auxiliary tube having aportion thereof extending into the main tube and turnable therein andanother portion extending along the outside of the main tube, saidauxiliary tube having an independent end- Wise movement and providedWith a valve for alternately closing and opening Coni munication betweenthe main tube and passagde kas the receptacle is reversed end for en nIn kWitness whereof I have hereunto set H. E. CHASE, EVA E. GREENLmr.

